Was the Echo CS-7310P a fad or is anyone running them?

[bwalker]

Trick question: how many folks upgrade a saw to plastic caged crank bearings? Laughing!

Stihl pro saws have had them for years.
Lack of oil is the problem.

 

[bwalker]

Exactly, I think Echo makes a fine product but Sometimes you just gotta ask the touch questions lol. I have zero experience with the 7310, but if I wanted a ported 70cc saw I want the biggest bang for the buck. The 572 runs excellent with a muffler mod, hadn't had a chance to run one ported.

As with most things in life, you pay for what you get.

 

[Outdoors]

As with most things in life, you pay for what you get.

I couldn't agree more with that statement.

 

[mainer_in_ak]

Stihl pro saws have had them for years.
Lack of oil is the problem.

That's a bit short-sighted. Living in a city, in the prarie(no trees),you lack the experience or perspective to say what holds up and what doesn't.

I had to replace the plastic caged bearings as one bearing race grenaded in my jonsered 2172(372 x torq) that has always been run on 32:1.

plastic crank bearing races degrade over time. Then combine that with the extreme nature of heat-up/cool-down cycles from 20-30 below zero to operating temp, these brittle, degraded races never last, at any oil ratio.

Beyond your typical internet charlatan who doesnt cut for a livin, Its pretty well known with experienced folks who run chainsaws in cold climates.

 

[mainer_in_ak]

As with most things in life, you pay for what you get.

when do u plan to buy a cs 7310 and get the most value/quality for your money? Will you cut wheat and straw with it?

 

[bwalker]

That's a bit short-sighted. Living in a city, in the prarie(no trees),you lack the experience or perspective to say what holds up and what doesn't.

I had to replace the plastic caged bearings as one bearing race grenaded in my jonsered 2172(372 x torq) that has always been run on 32:1.

plastic crank bearing races degrade over time. Then combine that with the extreme nature of heat-up/cool-down cycles from 20-30 below zero to operating temp, these brittle, degraded races never last, at any oil ratio.

Beyond your typical internet charlatan who doesnt cut for a livin, Its pretty well known with experienced folks who run chainsaws in cold climates.

It's just a fact that stihl pro saws have plastic caged bearings... it's short sighted that your expiereance is so limited you don't know this.

You are barking up the wrong tree, buddy. I am from Upper Michigan, I have logged professionally cutting real hardwoods and I would wager I have more saw time under my belt than you. In addition I lived for six years in far nw Ontario bush.
I am well familiar with snow and cold and have ran saws in it extensively.
Your just an Alaskan transplant with a Life Below Zero Fetish.
And no I dont cut for a living as I figured out long ago there were more lucrative and easier ways to make a buck. With your banged up body you would be smart to do the same.

 

[bwalker]

when do u plan to buy a cs 7310 and get the most value/quality for your money? Will you cut wheat and straw with it?

I am not struggling financially or otherwise so $100 bucks doesn't get my panties in a bunch. Therefore I will continue to buy the best available models., which isn't an Echo 7310..

 

[damifino]

You are barking up the wrong tree, buddy. I am from Upper Michigan, I have logged professionally cutting real hardwoods and I would wager I have more saw time under my belt than you.

You are barking up the wrong tree buddy, I am BWALKER!! Nobody stacks up against me. I have done it all and am the best at it. Just ask me I'll tell you. Matter of fact, dont ask and I'll tell ya anyway.

 

[sawmikaze]

I am not struggling financially or otherwise so $100 bucks doesn't get my panties in a bunch. Therefore I will continue to buy the best available models., which isn't an Echo 7310..

Anyone that does any level of serious tree work knows the price difference between chainsaws is peanuts...

 

[lehman live edge slab]

That's a bit short-sighted. Living in a city, in the prarie(no trees),you lack the experience or perspective to say what holds up and what doesn't.

I had to replace the plastic caged bearings as one bearing race grenaded in my jonsered 2172(372 x torq) that has always been run on 32:1.

plastic crank bearing races degrade over time. Then combine that with the extreme nature of heat-up/cool-down cycles from 20-30 below zero to operating temp, these brittle, degraded races never last, at any oil ratio.

Beyond your typical internet charlatan who doesnt cut for a livin, Its pretty well known with experienced folks who run chainsaws in cold climates.

Husqvarna and Stihl both claim there warranty claims went down with nylon cage bearings, also they have less losses from drag and hold up better at extreme cold temperatures. This was all posted by spike 60 at one time here and was a direct quote from a high up at sweeden who will see more saws than any of us. Also when the cage lets go the chance of a top end being destroyed is much less than the metal cage coming apart and they fail also. Tree monkey and many others don’t see the nylon cage as a downgrade. And yes echo makes a great saw that is simple, they may be able to stay that way awhile longer but probably not forever. Way I’ve been hearing they’re working on their own mtronic style control carb and a stratto saw which is probably good if they want to keep selling in the United States. Emissions drive all the technology stuff happening on saws and I’m sure they have carbon credits like every other industry they need to have a certain percentage of your equipment meeting standards or beating them to allow a certain amount of dirty equipment. This will balance your average out and allow you to continue selling in certain countries. That 4-mix and hybrid-4 design shindiawa and Stihl worked together on was for that reason. It’s all in your line so the 4-mix being much cleaner reduced the numbers enough to keep going with the ms440 and others at the time. Well echo must be getting close to needing more clean equipment because they just revived the hybrid-4 on a backpack blower and touting it as the engine of the future.

 

[bwalker]

You are barking up the wrong tree buddy, I am BWALKER!! Nobody stacks up against me. I have done it all and am the best at it. Just ask me I'll tell you. Matter of fact, dont ask and I'll tell ya anyway.

The paper hat brigade always has an inferiority complex.

 

[bwalker]

Anyone that does any level of serious tree work knows the price difference between chainsaws is peanuts...

Exactly...

 

[Mastermind]

Tree monkey and many others don’t see the nylon cage as a downgrade.

I don't see it as a issue either.

 

[bwalker]

I don't see it as a issue either.

It's not or the older Stihls would have had a ton of bearing problems when they simply dont.
Husky only has bearing issues with the stratocharged saws. Stratocharged saws are under lubricated due to their decreased fuel consumption.
@huskihl has mentioned that he hasn't had a single failure of these saws when ported and running more oil than 50:1.

 

[mrxlh]

Only 10% of all rolling element bearings meet life expectancy. The 4 main measurable defects (vibration analysis) outer race defect, inner race defect, ball/roller defect, and cage defect. 80% of failures are due to lubrication issues.

Cage defect is the least common of the 4 detectable defects, and is considered to be a unicorn in the vibration analysis world. I have only seen 1 rolling element bearing exhibit a “cage only” forcing frequency in 15 years as an analyst, which was on a 1200 HP gas turbine running ~22,500 RPM.

The cage failures in saw bearings is a secondary effect and not the initial cause of the bearing failure. Most common would be excessive heat from dull chains or improperly tightened (too tight) chains, lack of lubrication due to a main bearing seal air leak sucking the oil back towards the center of the crank case and improper amount/viscosity of oil used.

 

[Mastermind]

Only 10% of all rolling element bearings meet life expectancy. The 4 main measurable defects (vibration analysis) outer race defect, inner race defect, ball/roller defect, and cage defect. 80% of failures are due to lubrication issues.

Cage defect is the least common of the 4 detectable defects, and is considered to be a unicorn in the vibration analysis world. I have only seen 1 rolling element bearing exhibit a “cage only” forcing frequency in 15 years as an analyst, which was on a 1200 HP gas turbine running ~22,500 RPM.

The cage failures in saw bearings is a secondary effect and not the initial cause of the bearing failure. Most common would be excessive heat from dull chains or improperly tightened (too tight) chains, lack of lubrication due to a main bearing seal air leak sucking the oil back towards the center of the crank case and improper amount/viscosity of oil used.

Excellent post. Not hyperbole, just facts.

 

[bwalker]

Only 10% of all rolling element bearings meet life expectancy. The 4 main measurable defects (vibration analysis) outer race defect, inner race defect, ball/roller defect, and cage defect. 80% of failures are due to lubrication issues.

Cage defect is the least common of the 4 detectable defects, and is considered to be a unicorn in the vibration analysis world. I have only seen 1 rolling element bearing exhibit a “cage only” forcing frequency in 15 years as an analyst, which was on a 1200 HP gas turbine running ~22,500 RPM.

The cage failures in saw bearings is a secondary effect and not the initial cause of the bearing failure. Most common would be excessive heat from dull chains or improperly tightened (too tight) chains, lack of lubrication due to a main bearing seal air leak sucking the oil back towards the center of the crank case and improper amount/viscosity of oil used.

You must be a reliability guy?
In industry i don't know if I have seen a bearing failure that wasn't lube related. That's not me guessing. Bearing failures are a big deal on the equipment I deal with and we always send them out for 3rd party failure analysis.

 

[Mig_Selv]

This is indeed true.
An interesting fact that most people are unaware of, is that a large part of lubrication related failures, are caused by people putting too much grease in the bearings, making them commit suicide due to heat build up.
In our saws, I'd be surprised if vibration isn't the number one cause of bearing failure.
That, and people destroying the bearings when mounting them.
Cage defects are so rare, that it's not worth talking about, but as mentioned above, what people see when a bearing has failed, is the cage has been ripped apart, so they conclude it being the root cause, not a consequence of failure, as it in fact is.

 

[bwalker]

This is indeed true.
An interesting fact that most people are unaware of, is that a large part of lubrication related failures, are caused by people putting too much grease in the bearings, making them commit suicide due to heat build up.
In our saws, I'd be surprised if vibration isn't the number one cause of bearing failure.
That, and people destroying the bearings when mounting them.
Cage defects are so rare, that it's not worth talking about, but as mentioned above, what people see when a bearing has failed, is the cage has been ripped apart, so they conclude it being the root cause, not a consequence of failure, as it in fact is.

Crank flex has to be up there too.

 

[mainer_in_ak]

Back to the echo 7310p: dmn is this thing smooth! Lot easier on my hands than the ported cs 8000.

Balances a light 32" bar perfectly. Carb settings are a bit rich. Best $700 I've spent in a long time.

The savings from pinching pennies across my fleet of saws/cutting equipment is going into bringing a second 1 ton truck and a second trailer on board. Hopefully this spring I can hire a helper.

"Serious tree work":
When I get a booboo, I don't cry about them on go fund me then go on a stihl-spendin spree with the proceeds. When work dries up I don't have to cry about it on ope classifieds and sell off my stihls to get by. Perspective.........